Paper box



Oct. 13, 1936. A. H. DREUX Er AL. 2,057,293

v PAPER Box V Filed opt. 28, 1955 2 sheets-Sheet 1 Oct. 13, 1936.

A. H. DREUX ET AL PAPER BOX Filed oct. 2'8, 1935 y 2 Sheets-Shag?, 2

E112-enfans', .lexand'er ./7, Zrwz Joseph `g`ya Patented'oct. 13,1936 .l l Y.

UNiTED STATES winrar Orrick:

PAPER BOX Alexander H. Dreux, Orchard Park, and Joseph N. Royal, Buffalo, N. Y., asslgnors' to' F. N. Burt Company Limited, Toronto, Ontario, Canada, acorporation of Ontario, Canada Application October 28, 1935, Serial No.' 47.139

4 claims. (ci. ssi-55.1)

This invention relates to containersfor finely eral steps and the relation and order of `one or divided solid material and especially to face powmore of such steps with respect to each of the der boxes utilizing an inner powder receptacle or others, and the article possessing the features, powder drum which is to be filled with the powder properties, and the relation of elements, which 5 and inserted in the base of the box. are exemplified in the following detailed disclo- 5 One important object o f the invention isthe sure, and the scope of the application of which provision of a simple and practical construction wilibe indicated in the claims. by which. discharge of powder from the box is For a fuller understanding of the nature and confined to the regular discharge openingof the objects of the invention reference should be had l0. box, 'its egress or sifting thereof from. the box 'to the following detailed description taken in conl0 through the box joints being greatly minimized nection with the accompanying drawings, in or entirely prevented. ,i i. Whlcli v Another object of the invention is the provision. Fig. 1 is a perspective view, partly sectional, of

of an improved practical and efficient constriica. face powder box with its cover and illustrating tion of the box parts whichA lends itseii to the one of thepreferied embodiments of the inven-l 15 rapid production by automatic -machinery oftion: s simess powder boxes.v Y Fig. 2 is a central vertical section through the Another important object of the invention is `box of Fig. 1;` Y the provision of a simple and eiiicient construc- Fig. 3 is an enlarged vertical section of a portion of powder container drum which due to` its `111011 0f the box, the d0itd lines illustrating the improved features is highly promotive of the prodrum before being seated in position in the base duction of a siftlss box and which may readily of the box: and easily be inserted in place in telescopic rela- Fig. 4 is a .view of the base, the cover and drum, tion in the basa'notwithstanding variations of the. each in perspective and in separated relation:

relative diameters between the drum and the in Fig. 5 -is a partially diagrammatic plan view 25 terfitting base,` which are.normally encountered` illustrating a ring'made of a coiled strip of paper vunder different conditions of manufacture, such or similar material and which may be utilized as, diierent degrees of moisture in the stock, difeither in the base or in the drum, the strip being ferent quality and thickness of stock, etc.` vShown' as thicker than that which may normally Another object of the invention is the provision be employed; 30

of a simple and practical improved method forv Fig. 6 is a detailed sectional view similar to making non-sifting face powder boxes. Fig. 3, but showing a modified embodiment;

Another important' object ofthe invention is Fig. 7 is 'a perspective view of a box drum simithe provision of a practical constructionioi powlar to that of Fig. 4 but showing a modified emder box in which the powder material'is adapted bodiment of the invention; Y

to cooperate to form a packing for arresting'exit Fig. 8 is an enlarged fragmentary vertical raof powder from the box through the box joints. dial section of a box in'accordance with the em- It is a further object to provide an improved bodiment of...Fig. 7;

means of overcoming the manufacturing diflie Figs. 9 and 10 are fragmentary sectional per 4o culties normally met in the inherent variation in spectiveviews v showing the arrangement of the 40 the size, or more specifically the diameter of the caulking bead; i

container parts manufactured on high-speed pro-- Figs. 11 'and 12 are fragmentary perspective` duction machines with particular regard to those views of two forms of the fibrous caulking stri-ng parts that must fit within each other in the asemployed;

5. .semblyof thecomplete part Fig. 13 is a fragmentary sectional view similar 45 It is a further object to'provide a means of to Fig. 6 but showing the arrangement of the avoiding failureand other diiiiculties in the asmodified embodiment of Figs '7 and 8; sembly of container parts due', to the variation in Figs. 14, 15, 16, 1 7, 1 8, and 19L are fragmentary finished part size', which is occasioned by variasectional views similar to Fig. 13 but showing tions in the thickness of the several plies of stock further modied embodimentsV of the invention. 50r

used in making the parts of a round, square, rec- Referring now more specifically to the drawtangular, or mu1tisided box or container. ings, and first to the embodiment of Figs.1 to 5 Other objects of the invention will inp'art. be inclusive, the base of the box is indicated at A. obvious and will in part appear hereinafter. the cover or top at Band the drum at C. The base i Theinvention accordingly comprises the sev has a head I and an upstanding flange or ring 55 2. Similarly, the cover B has a head'3, and a depending flange of ring 4 and the head 3 may be domed as illustrated. The drum provides a container for reception of face powder and has a iiange or ring 5 and an overlying head 6. The head 8 may be readily frangible and made of ce1- lulosic transparent sheet material, or of other sheet materials, as alight weight paper, as tissue paper. A suiiiciently large sheet is selected and its margin or edge is folded onto the outside face of the drum-ring or ange 5, the fold being secured by an overlying strip of thin cover paper 1 extending continuously around the drum ring 5 and pasted to said ring. The cover strip not only secures the fold of the drum head i; it also covers any small wrinkles in the fold and provides a relatively smooth, unwrinkled outer side face of the drum flange or ring 5. For convenience of the powder maker, thebase A, cover B and drum C are provided as separate units. The drum C is open at its end opposite or remote from the head 8, and the powder maker places it with its open end up so it may easily be filled with the powder. Thereupon after filling, the drumniaybeinsertedin thebaseA,the1iange or ring 2 becoming an outer ring and the flange or ring I becoming an inner ring.' For finishing the Vbase .flange 2, and securing it to the head I. a thin strip `of ornamental paper or other material I may be wound onto theflange 2 and will be folded over the open edge of this H ange and around onto the head i, and adhesively secured inside and outside the base A. In like manner a finishing strip 9 may be aiiixed to the cover B.

lized in paper boxes the parts of vwhich are made by automatic machine operating at high speed. One of the most important objects sought for in a face powder box is that it shall not sift"; that itshall bey siftless, meaning that thepowdered contents shallbe retained in the box and not sift out through its joints. As tending to avoid sifting, the diameters of the drum flange I and the base flange 2 have heretofore been of re1a` tive size to obtain as tight a ilt as possible consistent with the requirement that one must be inserted in the other in telescopic relation. The resulthasbeenthatinmanycasestheinsertion may not be effected at all or only with the greatest care. thus leading to great loss of time and waste of materials, and increasing production costs and slowing down output. The high speed vmachines have thus often been impeded in the rapid production of merchantable boxes. 'They may run athigh speed. but frequently when general manufacturing conditions are not just right, much of the product has to be rejected. `Also, various supplemental operations at substantial oosthave been resortedto,none of whichhasbeen fully satisfactory, especially in making a satisfactory powder box capable of being marketed at low cost.

Dependence upon the fit of'the drum flung and the base ilange for tightness has been entirely' unsatisfactory. Supplemental operations of the past have been equally unsatisfactory in preventing or minimizing "sifting and have but added to operations and to cost.

An important aspect of the present invention 75 concerns the relative diameters of the inner and outen rings or walls provided for the base and drum respectively. v

An important related feature of the present invention resides in providing an inner drum ring or' flangeA of appreciably smaller outer diameter than the internal diameter of the outer basering, thus allowing a loose ilt between the rings notwithstanding variation of moisture content or thickness of stock material, so that free entry of one ring into the other is readily permitted under all conditions, a space being thus always provided between the two rings in their telescopic relation to each other. The importance of this will become manifest from the following considerations:-

In modern, high speed, automatic box machines these rings are formed by coiling or winding relatively stiff. thin paper stock on rotating a few thousandths of an inch betweenthe nt of the rings or iianges on each other that may result in sumcient looseness to sift powder or onethat is so tight that these rings cannot be made to telescope. Drum rings or flanges are commonly made of two, three or more ply light weight paper, and while on the whole they are relatively stiff, they may have some exibility, dependent on the paper stock and the number of plies Y employed. As has been 'before explained, the

margin of the head 6 is vfolded down and a cover' strip 1 may be applied. Accordingly, any predetermined outside diameter of the drum ring is dependent on several factors including the thickness of the paper stock and of the glue which may^be employed to hold the plies together and to secure the cover strip. Assuming it to be the practice to purchase nine and one-half point card-middling stock from which to coil a fourply drum ring, but such stock averages ten and' one-half points in thickness instead of nine and one-half points, eight thousandths of an inch will be added to the outer diameter of the drum. And it is not uncommon to ilnd even more variation, eight point to eleven point, affecting' the outer diameter of the drum ring in paper stock of this small caliper. Not only is there this unavoidable variation in thickness or caliper of the paper stock which will result in a nontelescoping drum-ring: there are also variations in thickness due to moisture content of the stock, its thickness being-one caliper when made and a differnt caliper when assembled drum to base. By providing the drumring of appreciably smaller outer diameter than the internal diameter of the base ring and having the loose fit as hereinbefore stated, the objections dependent on variations of stock-thickness for whatsoever reason are very substantially avoided and the production of siftless boxes at high speed on automatic machinery greatly promoted. Thisisespeciallysowhentakenin conjunction with the feature of the invention which arrests the escape of powder notwithstand ing thev rings are of appreciably different diameter as aforesaid As illustrated` in the drawings,

the drum ring i is commonly formed of rela'- tively stiif thin paper stock coiled in a plurality 1 of plies, into ring formation, as shown in Fig. 5.

Also it is to be understood that the ring or account of variation in caliper of stock. whether due to moisture or to unavoidable variation in i original( stock material) and nevertheless to pro-1 mote the anti-sift features of a non-sifting powder box. To this end a means is provided which is disposed and adapted to Ybring the diameters of the base Bange orring and the drum Bange J or ring to relative size producing a tight Bt in the joint between the base and drum. Initially this means may be mounted either on the base or on the drum. but it is preferably initially mounted on the drum.

i According to one embodiment of the invention as shown by way of example in Figs. l to 6, this compensating aspect of the invention includes plastic, joint-packing or caulking material Illwhich is cooperable to join the Bange walls or n rings of the' base and the drum together and, Vin 'the embodiment illustratedllies betweensaid rings and is in the form of a continuous circumferential bead or ring around the drum ring 5. This elevation or bead III is' of narrow width'relative to that l5 of the box rings and is spaced apart from the end Il of the drum. It is preferably located close to the frangible head 6 'of the drum and overlies the vfold thereof. It adds to the stiifness of the drum and hence tends to hold the head 6 taut. When initially on the outer face of the separate drum Bange of the inner face of the separate base Bange, it protrudes therefrom, and its protruding portion is curved or convexed outwardly in crosssection, as clearly seen in Figs. 3 and 4, and forms i5 other Bange. forced to telescopic relation with the Bange carrying the bead I|l,fwill cause said bead tightly to pack or caulk the space between said Bauges. -A

A suitable plastic material for the bead or ring d Ill is some species of solid wax: or wax-like substance, as blended wax. Preferably the ring I0 is bonded to the drum or base, which ever is the initial carrier, in a meltedstate. Under mild heat, it may be bonded to the other ring after a' o telescopic insertion in the other ring. The ring Il forms an exterior layer on the box part, rising very slightly above the surface thereof, or somewhat more than half the maximum variation between the outer diameter of the drum Bange and 7o the` inner diameter of the base Bange.

` In some instances it is desirable to utilize for the elevation -orfridge lila species of plastic, as wax, to which particles of the face powder will adhere due' to its tackiness, thus anchoring the -75 powder particles to the wax substance, and to the a relatively narrow strip or bead projecting later-` .3 paper-these particles tending to block any Bne interstices `in the wax packing and forming a packing of powdered material.

It is to be understood that either the base or drum having the wax or'plastic bead Il) mounted thereon is utilizable alone as a separate 'article of manufacture for any convenient use.

`In carrying out the method (according to the embodiment of the invention shown in Figs. lI to 6,) the base Banges or rings are formed separately from the drum Bauges or rings, and of relative size`loosely to interflt, as above set forth. After the paper rings are made the interiltting face of one ring is provided with a plastic shoulder or conforming ring, as the packing ring I0 of wax or other -plastic material 'which is thicker than the maximum variation of the space between said rings when the rings are'in interilttingrelation. This may be done by directing onto the drum while on its mandrel a stream of the melted, plastic material. This also bonds vthe plastic tothe drum. Thereafter one ring, after being filled with powder, is pressed into'the other and by the 4 pressing or driving operation the conforming ring or shoulder is driven into position tightly packing the joint between the rings. The bead or ridge lli being spaced some distance back from the leading or entering edge I I of the drum as described, it will be seen that entry of the druminto telescopic relation with the base is promoted and made very easy.' 'Ihus the leading end of the drum is en-V teredinto telescopic relation with the base before the bead l0 enters into engagement with the base walls. -This leading drum end being small enough in diameter to enter the base very readily and freely can quickly be placed in entering position,

.whereupon it functions as a guide to aid in positioning the base and drum with reference to each other during initial assembly thereof. After thus being placed in initial engaging position, the'base and drumfare forced together and as telescopic movement continues the bead or ridge enters and engages between the walls and `reaches its Bnal or home position at the same time that the drum does. By virtue of these improved features the box parts may be assembled much more rapidly than heretofore and jamming and imperfect aligning o`f the parts during assembly with consequent damage thereto are eflectually avoided, resulting in a saving of labor and material and the production of a more nearly perfect box. Whether the conforming ring orbead l0 is placed on the drum Bange or on the'base Bange. it extends continuously and uninterruptedly over the surface, thus forming an endless or annular conforming bead. After the drums are Blled and inserted in -the bases, a slight application of heat te the outside of the bases causes the plastic ring to bond to the Bange of the base, thus 'also making a hermetic seal. Y

By employing awax-like material having a"- relatively low melting point, as for instance paraiiine, the wax-like ring Ill easily chills and.

solidiiles so it may readily be handled, the ring oering a convenient shoulder or handle to lessen slip of the Bngers. An important function of the plastic is to interrupt and form a non-sifting powder-barrier in the joint between the rings.

It Blls the space between the rings and also will mold itself into all irregularities of the space,

as for instance lformed by the ends orgedges of the coverpaper, the folded margin of the head 6, and other irregularities. The plastic ring-i@ is of a substance relatively soft and solid at room temperature, as for instance some species of wax, and the melting point of`this substance is considerably lower than the point of inflammability or charring of the paper so that the substance may be bonded to the paper by the application of heat without injuring the paper.

' halowax, carnauba, spermaceti, cerese or comlhexagonal, or of other shapes. A It is `to be understood that the packing or binations of these waxes, or mixture of chlorodiphenyl and sulphur, the former comprising the larger percentage of the mixture. Bitumens or resinous materials might be used, or combination of bitumens andresins. It has been found to be advantageous to add carnauba to the paraillne to bring the melting point up to around 150 degrees F. and to add cerese to retain the plasticity.

In bases having non-flaring open ends, the

diameter of the plastic ring i0 on the drum ring' should be larger than that of the open end ofI the base ring so as to be compressed when forced past the edge of vsaid open end, and if the bead lll is considerably larger than the base ring, a

portion may be sheared oil! from the plastic ring in the operation of telescoping the two rings. In either case tight interfitting of the ring I0 in the joint is effected. Due to the flaring open base ends, or to the convex surface of the bead l0 presenting a tapered entering edge, or .to both of these features, there will be a wedging action as the bead enters the space betweenthe base and drum rings. This wedging action results in a slight forcing of the ring walls away from each othel against the resiliency thereof thus resulting in placing a permanent yielding pressure on the caulking bead to make a permanently tight siftproof joint.

It is to be understood that the boxes need not be round as illustrated, but maybe oval or polygonal or'of any shape appropriate for embodying the invention. Accordingly it is to be understood that'the terms ring, "flange", etc. herein employed cover` and comprehend similar walls for box parts whether they are oval, circular, square,

caulking'bead I0 may in some instances be applied to the base flange instead of to the drum nange, or each of these parts may have an indi- 'yidual bead. The bead applied to the drum 'is more practical, however, andyis to bepreferred. It is also to be understood that, whereas a coiled or multi-ply flange is illustrated, the. invention is available' for ilanges of 1 single plyl formation. ivhin paper stock is preferred for the 4material t the flanges, but it is to be understood that the invention is available for boxes-or box- #langes made of -other materials, as pasteboard,

card middle stock, andthe like. Also in so'rnel instances the conforming ring or bead ill is colered in contrast to the color of the flange to which it is applied, thus enabling its structureand arrangement to be more readily observed, and any defects noted and remedied. I

According to the embodiment ofthe invention as shown generally in.Figs. 'l and 8, the box structure for the most part is the same as in the embodiment already described -andthe materials may also be the samebut in this case-the caulk'- ing bead Ila is of inodied structure and the material of which it is made is also diiferent. The caulking bead ilamay be positioned as in the prior embodiment, either upon the drum flange 5a or upon the base flange 2a, being shown, however, as located upon vthe drum iiange. This caulking bead Illa includes a string I2 whit h may be of some iibrous material, such as cotton, hemp, Jute, linen, or the like. It may, for example, be a cotton twine string, and is yieldable to conform to the space available to receive the same between the walls of the drum and base. 'Ihis space. as already described, will vary somewhat under varying conditions of manufacture, but the base and drum are constructed so that there will always be an appreciable space under all varying conditions, whereby the drum and base will telescope loosely with each other. Whether lplaced on the drum iiange or upon the base ange, the caulking string.v I2 extends continuously throughout the extent of the iiange of the body part and is attached in position on the surface thereof. There may be a' single strand, as shown, or in some cases. there may be a multiple strand, that is, the string may extend more than once around the surface of the box part. The ends of the string maybe attached in any appropriate manner, as, for example, tapering the ends andoverlapping them. 'I'he overlapping, tapered ends may be attached together, as by an adhesive, such as wax or glue, and if desired the string itself may be impregnated with wax, or a wax-like substanceof the nature above described. Also the caulking string may be provided in the form of an endless ring of suillcient diameterto nt snugly over the supporting surface. Also the ends oi the string may be made to abut with each other. In any case, the caulking string may be attached rin position either by adhesive or as shown by means of a binding strip I3, of paper or similar material, overlying the string and secured by an adhesive to the surface of the box part. Such an attaching `medium holds the caulking bead or string in its correct position upon the box part, holds the ends of the described, and for a similar Purpose. The fibrous caulking string may bein the form of a cord having several` strands twisted together, as indicated at il in Fig. 11, or the i'lbres may be untwistedas shown at I l in Pig. 12.' Other yielding materials may be employed in the construction of this caulking string, such, for example, as resilient rubber.

In the embodiment shown 1n ng. v1s, the struetin-,e is generally the same as in Figs. l and 8, butthe caulking bead lIllb is diiferently positioned upon the wall of the box4 drum. This caulking bead includes a string IIb held in position on the box part as vabove described by a strip lib. The drum C is shown in partially telescoped position in dotted lines. In the embodiment of Fig. 14 the caulking be'ad ilic is lconstructedfsimilarly to the bead lila of Fig. 8,'but is positioned upon the inner surface of the cover element B engaging with the ilange of the base ,Is-rm. 15 the boxv structure is somewhat different-from that previously described, the base element A having the compartment for receiving element A so as to caulk the space between these two elements.

the powder and having a wall or anged upon the outer surface of which the caulking bead Ind is mounted; This caulking. bead Fis constructed and arranged substantially as described above in connection with Figs. I and 8'. The drum has a wall or flange 5d positioned outside of the flange and 8.

Inthe embodiments of Figs. 16, 17, and 18, the box structure is similar respectively to that of Figs. 8, 14, and 13. In Fig. 16, theI caulking bead or elevation IYe Iis formed by crimping or olfsetting the plies of the drum wall e Aso as-to provide a yieldable and conformable caulking bead extending entirely around the wall of the drum.

'I'his caulking bead cooperates to close the spaceI between the wall 5e of the drum and the wall 2e of the base, inthe manner already described. In

Fig. 17, the caulking bead Inf is formed byv crimping the wall 9i so asto provide a caulking bead cooperating withV the wa1l'2f,` the construction of the caulking bead being otherwise similar to that of Fig. 16. The-structure of Fig. 18 is similar to that of Fig. 13, but4 the caulking bead iilg is constructed by crimping the laminated wall 5g in a manner similar to that shown in Fig. 16. The structure of Fig. 19' is lsimilar to that of Fig. 15, but the caulking bead Ilih is constructed by crimping the wall of the base section A.

In all of the different embodiments of the invention, the caulking bead isyieldable and readily conformable to lill the space between the ad.- jacent telescoping walls so as to effectually close this space against sifting of the powder and to maintain the base and drum in the correctly assembled relation in which they have been placed. This is true whether the caulking bead is constructed of a wax-like substance, of a fibrous material, or is formed by crimping the wall of the box part. It is advantageous in some cases, especially in larger size boxes, to superpose a wax bead, such as bead I0, upon the string type 0f bead such as shown inFigs. 7, 8, 9, and 10,

l either with o r without the retaining strip I3. In b this manner the string is embedded in thewax bead which is preferably continuous'as in Figs. 1 to 5. Also in each case as above described the caulking bead presents a surface rounded orconvexed outwardly away from the surface to which it is attached, thus facilitating entry of the calllk- 4ing bead into the space between the adjacent telescoping walls when the box parts are moved intotelescopic engagement with each other. It will be clear furthermore that the'bead or ridge in each of the different embodiments is preferably positioned so as not to enter into the space between the walls until after the box parts have been initially entered into telescopic engagement, thus providing the initial assembling guiding functions abgve described. Also in each of the different embodiments, the" caulking bead lis tapered at its entering or forwardly directed edge so as to provide a wedge-like construction having a wedging function when the parts are moved into telescopic engagement-thus forcing the `walls away from each other slightly in opposinon te the resiliency of the walls." This relation, as above described, places a permanentv yielding terpreted as illustrative sense.

pressure upon the caulking bead to make ya siftprof joint which is permanent.

In any of the diiferent embodiments of the invention, the space between the telescoping base and drum'ilanges is regulated so as to be always of appreciable extent and greater than the manufacturing variation resulting from such variables as quality and thickness of stock, moisture conditions, etc., as above mentioned. Also the caulking bead, no matter what its type or specific structure,v will always be made of sufficient thickness to be greater than this space under -all normally variant conditions. provides for the yielding or conforming caulking action with the box parts moved into telescopic engagement with each other. The wedging sealing action between the box parts could also be` accomplished or accentuated by providing a flarlng structure in the wall part at the edge thereof wherethe caulking bead enters. v

It is also to be understood that. in some aspects of the invention, the shape of the caulking or packing may .vary from continuous ring form, an

important feature being to close the joint between the base and drum regardless of the shape of packing required to do so.

Certain of the subject matter of this application is disclosed in applicants prior copending application Serial No. 756,447, filed December 7, The present application, therefore, is a continuation in part of the earlier application.

` Since certain changes in carrying out the above process, and certain modifications in the article which embody the invention may be made without departing from its scope, it is intended that all matter contained in the above description or shown-in the accompanying drawings shall be inand not in a limiting Having described our invention, what we claim as new and desire to secure by Letters Patent is:

1. A method of making boxes, including, making two paper box parts each with continuous or endless walls adapted to telescope with -each other, and making the outer diameter of the inner telescopic part suiliciently less than the inner diameter of the outer telescopic part so that said parts telescope loosely with a'space therebetween under variant conditions of material going into the box parts and of moisture therein, placing in ilxed position on the cooperative telescopic surface of one of said box part walls a readily conformable caulking bead extending entirely around part, making the outer diameter of the inner telescopic -part sufliciently less than the 4inner tivetelescopic surface of one of said boxv part walls a"caulking beadof readily conformable structure so asto extend entirely aroundsaid cooperating telescopic surface, and subsequently placing said walls into telescopically engaging relation with each other, and at the same operation entering the caulking bead into said space Vwith a wedging action to caulk the space betw the outer and inner box parts.

3. The method of making and assembling a paper powder box having a base section and a powder-containing drum with a frangible head and opposite open end. which includes: making the resilient paper walls of the base section and of the powder-containing drum for telescopic engagement with each other with the outer diameter of the inner' telescopic wall sufficiently less `than the inner diameter of the outer telescopic wall so that said 'Walls will telescope with enough space therebetween to provide for loose, easy entry of one into the other; forming a yieldable elevation or ridge slightly thicker than the space between said walls and extending around the telescopically engaging surface of one of said walls; entering the end of one of said walls into telescopic relation with the other wall and utilizing the loosely engaging parts thereof to guide the drum and base into telescopically assembled relation with each other prior to engagement of Athe ridge between the walls; and subsequently,

4. The method of making and assembling a paper powder box having a base section' and a powder-containing drum with a frangible head and opposite open end, which includes: making 'the resilient paper walls of the base section and of the powder-containing drum for telescopic engagement with each other with the outer diameter of the inner telescopic wall suiiioiently less than the inner diameter of the outer telescopic wall so that said walls will telescope with enough space therebetween to provide for loose, easy entry of one'into the other; forming a yieldable elevation or ridge slightly thicker than the space between said walls and extending around the telescopicaliy engaging surface lof one of. said walls; filling said powder-'containing drum with powder through its open end prior to assembly with the base section; entering the open end ot the wall of the iilled drum into telescopic relation with the other 'wall and utilizing the loosely engaging parts thereof to guide the drum and base into telescopically assembled relation with each other prior to engagement of the ridge between the walls; and subsequently, while the walls are being vmoved into fully telescoped relation' with each other, entering the ridge into engage ment with the companion wall and-forcing said ridge with a wedging action into tightly engaging position between the walls so as to compress the ridge to cause it to conform to the walls and space, and to urge the walls away from each other slightly in opposition to the resiliency thereof. thus to maintain constant pressure on said ridge and to lmaintain a tight Joint.

ALEXANDER H. DREUX. JOSEPHl N. ROYAL. 

